User's Manual

Smart Systems User’s Manual Version 1.1

The user is prompted to delete data when the maximum number of screens (250) has

been reached. When this occurs, the user MUST delete 10%, 25%, 50%, 75% or 100%

of the screens. Note that when less than 100% of the screens are being deleted, the

oldest screens are deleted first.

It is also possible to delete all or some of the current screens of data before 250 have

been collected. To do this, stop the system, press the B button and then follow the

directions to delete 10%, 25%, 50%, 75% or 100% of the screens. Note that when less

than 100% of the screens are being deleted, the oldest screens are deleted first.

5.4.5 Special Keys

A Button = Fiducial Marker

Smart Handle button = Fiducial Marker

During data acquisition, the user can press the A button or, on a the Smart Handle

system, the Smart Handle button to put a fiducial marker on the data (see Section 5.2.2

– Fiducial Markers).

B Button = Background Subtraction Filter:

BEWARE THAT THE BACKGROUND SUBTRACTION PROCESS REMOVES DATA. IT

SHOULD ONLY BE TURNED ON WHEN THIS TYPE OF FILTERING IS NECESSARY.

The background subtraction process has the effect of removing flat-lying events in the

data and enhancing dipping events (like the response from pipes and other point

targets). It can also assist in seeing very shallow targets (< 0.5 meters) that may be

masked by the strong signals at the start of the trace.

Pressing the B button during data acquisition turns on (or off) the Background

Subtraction filter. When it is turned on, the text B-SUB ON is displayed in the lower right

corner of the screen. Stopping data acquisition turns the Background Subtraction filter

off.

5.4.6 Error Messages

If an error occurs, an error message will appear in the bottom left section of the Noggin

screen. EXIT the program and turn off the Digital Video Logger.

Make sure the cables are not damaged and that all cable connections are tightly

secured. Sometimes vibrations cause the cable connections to loosen just a bit and

break contact and this can cause errors. Disconnecting cables and reconnecting them

may provide a better contact and solve the problem. Also check and make sure the

battery is adequately charged. Turn the Digital Video Logger back on and try running the

system again.

For more information on Troubleshooting the system, see Section 7.